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With the tide of mobile Internet, there is a huge demand for people to enjoy faster, lower and even free network access anytime, anywhere. The high-bandwidth and low-cost characteristics of wireless WLAN are precisely the access technology for high-speed wireless networking that meets this huge demand, making wireless WLAN access services available in more and more areas. As an open public service, and through an open medium (air), using electromagnetic waves as a carrier to transmit data signals, the wireless communication parties are not connected by physical cables. If the wireless signal transmission in the air does not take proper encryption protection, the risk of data transmission will increase greatly. At the 2001 Hackers Conference in Las Vegas, security experts pointed out that wireless networks will become another hot spot for hackers. Therefore, it is particularly important to ensure the safety of transmitted signals in WLAN. The wireless security performance p

DMVPN is a common technology used by enterprises to deploy VPNs on the Internet. It is most suitable for deployment in the Hub-Spoke structure. It mainly uses the combination of mGRE, NHRP and IPsec to provide dynamic multipoint and security functions. DMVPN is also the knowledge point of EI CCIE. There are three stages in the development process of DMVPN. Let's discuss it below. Phase 1 (Phase 1) is as follows: In Phase 1, the Hub uses mGRE, the Spoke uses P2P GRE, and the Hub and all Spokes use the same network segment. In this case, Spoke cannot access each other directly through Spoke, and must first go through the Hub. If you run the routing protocol in Phase 1, you must ensure that the Hub side is used as the next hop for Spoke to access other Spoke routes. If you use EIGRP, you need to turn off the split horizon at the Hub side; if you use OSPF, you need to use a point-to-multipoint network interface in the Hub Type; if using BGP, eBGP is recommended.

As we all know, wireless AP devices are used to centrally connect all wireless nodes and perform centralized management. The general wireless AP will provide a wired Ethernet interface for connection with wired networks, workstations and routing devices. The following editor will introduce 10 ways to quickly troubleshoot wireless AP, I hope to help everyone. 10 ways to quickly troubleshoot wireless AP 1. Wireless connection rate drops Wireless network equipment can intelligently adjust the transmission rate to adapt to changes in wireless signal strength and ensure the smoothness of the wireless network. However, if the network connection speed is lower than 2Mb / s for a period of time, it means that the network may be faulty. You can perform the following operations to restore the original transmission rate: 01. Check whether the power saving mode of the wireless network card is turned on. When the power saving mode is adopted, the transmission power of the wir

SD-WAN is a new test site in EI CCIE. Students who plan to take the EI exam will now complete a new technology study plan. PASSHOT's EI LAB Dumps is your best choice. The most professional teachers in the whole network are the most valuable. The courses with the highest pass rate are waiting for you to join. Let's learn what we have today. One of the keys to software-defined network solutions is the visibility to the network and the applications running on that network. The automation and analysis capabilities of the Cisco SD-WAN solution provide administrators with SD-WAN operability. The vAnalytics platform provides a graphical representation of the performance of the entire Cisco SD-WAN overlay network over time, enabling in-depth study of the characteristics of individual operators, tunnels, or applications at specific times. The vAnalytics dashboard can be used as an interactive overview of the network and as an entry point for more detailed information. T

The integration of SD-Access and wireless in the EI CCIE exam is the focus we should pay attention to. SD-Access Wireless is defined as the integration of wireless access in the SD Access architecture to obtain all the advantages of structure and DNAC automation. Some advantages of SD-Access Wireless are: ● Centralized wireless control plane: SD-Access Wireless will also use the same innovative RF capabilities that Cisco today deployed in the Cisco Unified Wireless Network (CUWN). In terms of RRM, client startup, and client mobility, wireless operation remains the same as CUWN, which simplifies | T adoption. ● Optimized distributed data plane: The data plane is distributed on the edge switch to achieve the best performance and scalability without bringing the usual and distributed traffic (across VL.AN, subnetting, large broadcast domain, etc.) Related troubles. ● Ubiquitous L2 roaming: SD-Access Fabric allows clients to roam seamlessly throughout the campus wh

With the advent of 5G and the arrival of the new Internet of Things, the requirements for switches are higher and the demand will be greater. The interconnection of all things is inseparable from the network basic equipment-the switch, which will play a vital part in the networking of the Internet of Things. Four network structure modes of the switch: Cascade connection This is the most commonly used networking method, which is connected through the cascade port (UpLink) on the switch. Cascading can be defined as two or more switches connected to each other in a certain way. As required, multiple switches can be cascaded in multiple ways. In a larger local area network such as a campus network (campus network), multiple switches generally form a bus-type, tree-type, or star-type cascade structure according to performance and usage. It should be noted that switches cannot be cascaded without limit, and cascading more than a certain number of switches will eventu

It has been 2020, and the Internet has already become a necessity of human life. Today, all walks of life need an Internet, even a restaurant needs wifi for guests to surf the Internet. Now that the network is needed, network engineers have become indispensable. How should network engineers of different levels learn? No contact with the Internet industry stage I intend to work in the Internet industry, but I don't know anything. Do n’t read lengthy articles, do n’t rush to watch videos to learn technology, and do n’t look at messy forum introductions. The first thing: understand the industry, understand the network. Know what the network does, what this industry does, and which companies are in the industry. You must first understand the advantages and disadvantages of this industry, including companies in this industry: such as Cisco and Huawei. If you enter the company, what are you going to do, is the job suitable for you, what is your salary, ca